One of the most important energy savers you'll find that you have in your design over your baseline is in your internal loads under your lighting. So that's something that we probably don't want to leave up to the wizard anyway. More than that, the lighting power density changes by standard because technology is getting better. Let's just look at the lighting here.

The lighting is created based on the weighted average of these two inputs, but we can override that. The lighting power density came out based on the percent office and percent lobby as 1.15 watts per square foot. In your actual design with LEDs and things like that, we're seeing numbers at around 0.5

watts per square foot, sometimes even lower than that. And this gives us a substantial room for change. If we look at table 9.5 in standard 90.1

2007, we can just look at an office and we can see that we're allowed 1.0 watts per square foot when we consider the whole building. We can alternately enter a building based on a space by space plan, but for someone who's using the wizard, probably going to just use the whole building method. You can see in the space types, the office space would actually be allowed 1.1

watts per square foot, but then the corridors and other spaces would be allowed less. The restrooms, for example, would be at 0.9. And in general, a space by space, in my experience, does save some energy, but it's not significant. And for this purpose, we'll just stick with the building area method.

If you ever need to squeeze out the extra savings, sometimes it's worth editing each room. Okay, so we'll look at the lighting and this is the office. We don't want to change one space at a time because that would take a long time. So instead, we'll go into the spreadsheet mode.

We'll set lighting and we can see that the numbers are actually input slightly differently. This is the 1.158. We're rounded the number. For the whole building method, we simply need to select all of these lighting power densities and set them to 1.00

for the 90.1 2007 standard. This may be different for 2010, 2013, and so on, but it's a simple item to look up in table 9.5.1 and we just set the building number.

There's a couple ways to do this. In a building this size, we can just punch the number one in. There are other ways to do that, including copying and pasting. Sometimes you could, for example, we could put in a two here.

We could hit CTRL C and then we could try CTRL V and that will propagate through all of the selected items. So I'm going to set that again as a 1. I'm going to CTRL C and I'm going to CTRL V to copy and paste that and that will paste all of the values. And there we simply have the building set up with the lighting power set correctly according to 90.1,

table 9.5.1 for an office. And this is for the baseline. Again, the proposed would hopefully have a lighting power density of something like 0.6

or even 0.5 or less based on the new lighting technology. So that's all for editing the lights. It's very important, but that's the gist of setting that in an automated fashion.

We just simply will override based on the standard.